Hack-saw frame



w. J. P ARsoNs June 23, 1925.

HACK SAW FRAME Filed June 30, 1923 INL/SNTOR a/ BY y 'XM ATTORNEYPatented June 23, 1925A.

UNITED STATES 1,543,185 PATENT oFFicE.-

WILLIAM J. PARSONS, OF IVIILLERS FALLS, MASSACHUSETTS, ASSIGNOR TOMILL-ERS FALLS COMPANY, OF MILLERS FALLS, MASSACHUSETTS, A CORPORATIONOF MASSACHUSETTS.

Application led June 30, 1923.

l To all whom t may concern:

Be it known that I, 1WILLIAM J. PARSONS, a citizen o-f the UnitedStates, residing at Millers Falls, in the county of Franklin and Sta-teof Massachusetts, have invented certain new and useful Improvements inI-Iack- Saw Frames, of which the following is a full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains to makeand use the same.

This invention relates to an improvement in tool frames and aims toprovide a device of this character more particularly adaptedl for use inconnection with saws and specifically that type. of device known as ahacksaw.

It isv an objectof the present invention to provide an article of thecharacter stated, which will embrace two major parts connected together,these parts each having attached t0 them those subsidiary parts whichmay be necessary to provide a complete frame.

It is a further object of the invention to construct a frameof thenature aforementioned, which frame will be capableof being extended sothat blades of different lengths may be accommodated within the same.

A still further object of the invention resides in the provision of aframe, the parts of which may be moved with respect to each other, butwhich parts are normally locked in such a manner that no movement of thesame can occur, this locking being accomplished by means of a simpleexpedient.

Another object is to be predicated to the provision of a tool frameinvolving a handle forming virtually an integral portion thereot. y

Other objects of the invention will in part be obvious and will in partappear hereinafter.

The invention accordingly comprises the features of construction,combinations of elements, and arrangement of parts, which will beexemplified in the constructions hereinafter set forth and the scope ofthe application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invent-ionreference should be had to the following detailed description HACK-SAWFRAME.

Serial No. 648,757.

taken in connection with the accompanying drawing, in which Y Y Fig. 1,is a side view with certain of the parts broken away ltoy disclose theunderlying structure, and

Figs. 2 and 3 are transverse sectional views taken along the lines 2 3and 8-3, and in the directions of the arrows as indicated in Fig. 1.

In these drawings it will be seen that the frame includes a U shapedbody, embracing two major port-ions, one of the same comprising an Lshaped body, consisting of a stein 5 and a lateral arm 6, while thesecond part includes a meniber'presenting a stem 7 in the nature of asheath and an arm 8 att-ached thereto in any desirable manner. such as,for example, by rivets.

I/Vit-h a view o-f securing the stems and 7 to, each other, it will benoted thatv the former may carry a pin 9 adapted to engage selectivelyany one of aseries of openings 10 formed in the base of the latter.Furthermore, it will be noted that the stem 7 of the second part isformed with offset portions 11 adjacent one of itsl ends and exv theunder edge of the stem 5 so that the latter is only capable of slidable,or swinging movement in one direction with respect to the sheath 7, fora purpose hereinafter brought out.

Fixedly attached to the sheath 7, adjacent its outer end, and at the`junction of the arm 8 therewith, is an extension 13 which is disposedat an acute angle to this arm and at an obtuse angle to the sheath. Ahandle or grip suitable for manipulating the frame may be secured tothis extension 'so that it forms what virtually amounts to an integralportion thereof, by simple molding aA suitable plastic material 14around the extension 13, it being obvious that by this expedient thehandle yis rigid with the frame and that there is no Vdanger of playcoming into existence between these parts.

In order to secure a blade 15 to the fram@ suitable attaching means maybe associated with each of the arms' 6 and 8 4adjacent their outer ends,this'attaching means in the present instance embracing blade anchoringmechanism 16 carried by the arm 6 and a blade tensioning mechanism 17,

secured to the outer end of the arm 8, it beingapparent that the greaterthe amount of tension to which the blade is subjected, the more firmlythe parts of the frame will be locked with respect to each other.

.In use it will be understood that the inner end of the stem isintroduced into the channel of the sheath providedv by the stem 7, itbeing -obvious that during this operation the two parts of the frame areangularly disposed with respect to each other. After these parts havebeen telescoped to such an extent that the arms 6 and 8 are spaced fromeach other a proper distance to accommodate therebetween the particularblade which is to be mounted by the frame, the stems 5 and 7 are swunguntil they align, i. e., to the position illustrated in Figi, and thepin 9 is-brought to extend into that opening 10 adjacent which it isdisposed, so that any further longitudinal movement of theparts withrespectto each other is avoided. One end of the blade 15 may now beattached to the anchoring mechanism 16 and the opposite end thereof isnow associated with the tensioning mechanism 17, and. the latter ismanipulated to exert a drafting action on the blade. This pull willobviously be transmitted to the arm 6 and the latter, incident to itsconnection with the stem 5, will tend to cause this member to swing withrespect to the stem 7, the support 12 acting as a. pivot for thisswinging action. Due to the fact, however, that the two major parts ofthe frame are incapable of suc-h swinging movement, this action willresult in the parts being firmly interlocked.

It is obvious in this connection, that due to the fact that the arm 6 isintegral with the stem 5 while the arm 8 is virtually integral with thestem 7, that no movements can -occur at these points and thus, althoughthe frame is rendered adjustable by having its major portions capable oftelesco-ping movement with respect to each other, the frame, when itsparts are in locked position, permits of no movement of either of thearms relative to each other.

Also', it will be noted that the handle as aforedescribed, is providedby having the same form what virtually amounts to an integral portion ofthe frame, this handle being reinforced and anchored in position by theangular member 13 which extends substantially the full length of thegrip and Y projects into the channel of the stem 7, as in Fig. 2, andalso for the reason that this handle is preferably extended to envelopethe rear end of this st-em and to be in intimate contact therewith, itbeing seen in fact, as in Fig. 2, that the material of the handle maykey into the channel of the stem.

From the foregoing it will be appreciated that by means of the presentinvent-ion there isprovided a frame whichl is of peculiar virtue whenused in connection with a hacksaw blade, in that this frame, althoughbeing extensible, involves merely two major parts which are capable ofmovement with respect to each other, although the same are normallylocked in such a positive manner that no movement can occur and that noplay will come into existence. Furthermore, it will be understood thatthe handle herewith suggested, forms what is virtually an integralportion of the frame so that all difficulties in this connection areal-so avoided.

Thus, the objects of this invention are accomplished and it will beappreciated that since certain changes may be made in the aboveconstruction and dierent embodiments of the invention could be madewithout departing from the scope thereof, it is intended that all mattercontained in the above description or shown in the accompanying drawingshall be interpreted as illustrative and not in a limiting sense.

Hc ving described my invention, what I claim as new and desire to secureby Letters Patent, is z,

1. A hack-saw frame, including, in combination, a. sheath U-shaped incross section, an arm disposed substantially at right angles thereto andat a point short of the end thereof, said arm having its inner endprojecting between the side walls thereof and rigidly secured thereto,a. stem slidable wit-hin said sheath, an arm carried by said stem,bladesecuring means associated with said lastand first-named arms, ahandle member iudependent of said first-named arm, said member having abeveled end-portion and being arranged adjacent the end of said sheathwith its beveled end resting against the base thereof whereby the bodyof said member extends obliquely thereof, and means for securing thehandle member in such position.

2. As an article of manufacture, a tool frame including a sheathU-shaped in cross section, a handle member having a beveled end-portionextending into said sheath with its edge in contact-with the basethereof whereby its body extends obliquely thereof, and a mass ofplastic material enveloping said handle member and the point ofconneet-ion of the same with said sheath7 said material being keyed intothe space extent between the side walls of said sheath.

In testimony whereof I aiiix my signature in the presence of twowitnesses.

WILLIAM J. PARSONS.

Witnesses:

EARLE A. BROWN, LENA O. PERKINS.

